transient technique 中文意思是什麼
transient technique
解釋
瞬變技術-
Substructure technique for transient wave of flexible body with impact
柔性體撞擊瞬態波子結構法研究 -
New designed auto tracing arc eliminating device based on this technique contents more technology, which has sample circuit, wide tuning scope, quick response and low noise. this paper firstly introduces neutral grounding histroy. by analyzing the syntony grounding theory, the transient and stable process of one - phase grounding fault, the threaten to secure run of power system and the importance of exact compensation for capacitive current are cognized
論文中首先介紹了中性點接地方式的發展過程，通過對諧振接地原理和單相接地故障的暫態、穩態分析，認識到接地故障對系統安全運行的危害，通過消弧線圈對接地電容電流的迅速準確補償是減小故障危害的最主要手段。 -
The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。 -
Test method for thermal conductivity of plastics by means of a transient line - source technique
利用瞬間線性源技術測量塑料熱傳導率的試驗方法 -
Analysis results of histogram statistics and section electron microscopic scan technique, are that fracture feature of the cracks of the hbbb is similar and the crack is multi - source strain fatigue one. internal defects of the cast, such as impurities, gas holes, etc, are the main causes for early cracks. the contrast analysis of static strength, model and transient respond on three structures with fem proves that geometrical stress concentration in partial area has influence on early crack, also
利用直方圖等統計方法和電鏡掃描技術對該抱軸箱體裂紋分析的結果是：抱軸箱體的裂紋斷口特徵相近，裂紋性質屬于多源性低周疲勞裂紋，鑄件中的夾雜、氣孔等內部缺陷是導致過早裂損的主要原因；利用有限元法對該抱軸箱體三種結構的靜強度、模態和動態響應對比分析，證實了局部幾何性應力集中對過早裂損也有一定影響。 -
Dynamic performance measurement technique of transient high temperature sensor
瞬態高溫傳感器動態性能測試技術研究 -
The formulation for the flow model is given using the finite element / control volume ( fe / cv ) technique based on darcy ' s law of creeping flow through a porous media. the heat transfer model is based on the two - dimensional, transient heat conduction equation, including heat generation. the cure kinetics model is based on kamal ' s model, and the degree of the resin cure as a function of temperature and time
樹脂流動階段的模擬是根據牛頓流體在多孔介質中的滲流理論，應用darcy定律並使用有限元/控制體技術建立起來的；熱傳遞模型是一個二維瞬態熱傳導方程，考慮樹脂反應放熱；樹脂的固化模型利用了kamal提出的固化動力學方程，將固化度取為時間和溫度的函數。 -
Standard test method for thermal conductivity of plastics by means of a transient line - source technique
用瞬變線源技術對塑料熱導性的標準試驗方法 -
The ohio state chemists used a technique called transient absorption, which is based on the idea that molecules absorb light at specific waelengths, and allows them to study eents happening in less than a picosecond
俄勒岡州化學家採用一種技術名為」瞬時吸收「 ，原理基於不同分子吸收不同波長的光，使之能研究少於1皮秒所發生的反應。 -
The ohio state chemists used a technique called transient absorption, which is based on the idea that molecules absorb light at specific wavelengths, and allows them to study events happening in less than a picosecond
俄勒岡州化學家採用一種技術名為」瞬時吸收「 ，原理基於不同分子吸收不同波長的光，使之能研究少於1皮秒所發生的反應。 -
Iterative learning control ( ilc ) is a technique for improving the transient response performance of systems or processes that operate repetitively over a fixed time interval. it refines the next control input using the information such as current control input and error signals after each trial until the specified desired trajectory is followed to a high precision
迭代學習控制針對具有重復運行性質的被控對象，利用對象以前運行的信息，通過迭代的方式修正控制信號，實現在有限時間區間上的完全跟蹤任務。 -
This paper summarized a system feature set for transient stability classification, several methods for analyzing the separability of input space of transient stability classification are discussed, tabu search - ing technique is employed to select an effective set of features from a large initial features set. the classification test shows that the presented method works very well for feature selection. fisher linear recognition is employed to cut down the training sample set, the computation burden of the ann training is alleviated very much, so the convergence performance is improved
本文總結提出了一組用於穩定分類的系統特徵，研究了幾種暫態穩定分類輸入空間可分性分析的方法，並利用tabu搜索技術從一個維數較大的特徵集中選擇出一組有效特徵，取得了良好的效果；研究提出了利用fisher線性識別技術壓縮訓練樣本集的方法，大大減輕了ann的訓練負擔，提高了ann收斂的性能。 -
For this study, the chemists used a technique called transient absorption to obsere the dna damage
就該項研究，科學家使用了一種被稱作短暫吸收的技術觀察dna損傷。 -
It emphases the selection of secondary voltage of the step - down transformer, the control and protection of thyristor, the calculation of compensation capability and group capability, the technique of cross - zero switched on / off capacitors or reactor, the solution of avoiding possible resonance in switching on / off groups of capacitors or reactor and the measure of the best time to switch ( including the design of the computer survey and control system, instrument deliver system, delay operate and protect system ). although thyristor as a no - contact switch can avoid almost the problem of contact switch with contact, it can not solve the over - voltage, over - current and transient process itself as switching on / off capacitors or reactor. so we must develop a set of thyristor - switched control and protect system with great reliability so that it can realize of cross - zero switching on / off capacitors or reactor at any time
晶閘管具有過零、動作快速的特點，本研究以晶閘管為電容器和電抗器的分組投切開關，重點研究了協調變壓器二次電壓的選擇、晶閘管觸發控制及保護、動態補償容量及分組容量的計算確定、過零投切電容器和電抗器技術的實現、以及分組投切電容器和電抗器可能發生諧振的處理計算方法，給出實現最佳補償投切選擇方法（測控系統、儀表變送系統、操作和保護系統的設計步驟） ，研製了一套高可靠性晶閘管觸發控制及保護系統，實現對無功的靜止可調補償。 -
It also inquires its existing questions and researching direction. all of these must improve myself very big in the research and application of transient electromagnetic methods technique in my future
並就其存在問題、研究方向進行了一些探討，對本人今後在瞬變電磁法技術的發展方面將有很大的促進作用。 -
In a word, this paper not only deeply and systematically research transient electromagnetic methods from the theory, but also analyzes and summarizes its method technique and effect of application
總之，論文不僅從理論上對踩變電磁法進行了較深入、系統的研究，重點還對其方法技術、應用效果進行了分析和總結。 -
The dynamic meshing technique was adopted to realize the 3 - d transient numerical simulation of vehicle overtaking process in order to study the influence of relative velocity and absolute velocity on the aerodynamic characteristics of the overtaking and overtaken vehicles during the overtaking process
摘要為了研究超車過程中相對車速和絕對車速對汽車氣動特性的影響，採用動網格技術實現了超車過程的三維瞬態數值模擬。 -
The performance of the proposed technique was simulated on the electromagnetic transient program, emtdc. the results of simulating show that the technique is effective and robust
本文在大型電磁暫態模擬軟體emtdc的平臺上進行了大量模擬，模擬結果驗證了該方法的正確性。 -
Today, oop and com technique is used widely in software area. in this paper, on the basis of nonlinear transient electromagnetic field analysis, oop technique is applied to build the basic class library of machine, and the store of large sparse matrix was combined with related algorithm closely, which save the cpu time obviously
目前面向對象編程技術（ oop ）和組件技術（ com ）已在軟體領域得到廣泛應用，本文在進行非線性瞬態電磁場理論分析的基礎上，採用oop技術，進行了電機求解的基本類庫的構建，將大型稀疏矩陣的存儲與有關演算法緊密耦合，顯著提高了運算速度，並形成了用於求解非線性瞬態電磁場的軟體包。 -
This paper mainly analyses and introduces the basic fundament and technique of method and applied effects of transient electromagnetic methods according to working practice of author who has been engaged in this geophysical method for many years
論文主要根據作者多年來從事瞬變電磁法勘探工作實踐，分別就其基本原理、方法技術及應用效果諸方面進行了全面總結和較深入地分析研究。
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